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In Situ Generation of N-Heteroaromatic Polymers:Metal-Free Multicomponent Polymerization for Photopatterning,Morphological Imaging,and Cr(Ⅵ)Sensing

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CCS Chemistry 2022年第7期4卷 2308-2320页

作者： yubing Hu Neng yan Xiaolin Liu Lingyu Pei Canbin ye wen-Xiong wang jacky w.y.lam Ben Zhong Tang Department of Chemistry The Hong Kong Branch of ChineseNational Engineering Research Center for Tissue Restoration and ReconstructionInstitute for Advanced StudyThe Hong Kong University of Science and TechnologyGuangdong-Hong Kong-Macro Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsClear Water BayKowloonHong Kong 999077 HKUST-Shenzhen Research Institute NanshanShenzhen 518057 School of Energy and Environment State Key Laboratory of Marine PollutionCity University of Hong KongKowloonHong Kong 999077 Center for Aggregation-Induced Emission From Molecular AggregatesSCUT-HKUST Joint Research InstituteState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640 Shenzhen Institute of Molecular Aggregate Science and Engineering School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong 518172 AIE Institute Guangzhou Development DistinctHuangpuGuangzhou 510530

Electron-deficient N-heteroaromatic polymers are crucial for the high-tech applications of organicmaterials,especially in the electronic and optoelectronic ***,the development of new polymerizations to afford adaptable electron-donating-accepting scaffolds in N-heteroaromatic polymers is in high ***,we have developed metal-free multicomponent polymerizations of diynes,diamines,and glyoxylates successfully for in situ generation of poly(quinoline)s with high molecular weights(Mw up to 16,900)in nearly quantitative *** tuning the electron distributions of the polymer backbones,the resulting poly(quinoline)s showed various aggregation-induced behaviors and photoresponsive abilities:The thin films of the poly(quinoline)s could be fabricated readily intowell-resolved photopatterns by photolithography *** could be utilized as fluorescent probes to visualize themorphologies of polymer materials directly;these include spherulites and microphase separation of polymer *** nanoparticles demonstrated sensitive and highly selective fluorescence quenching to hexavalent chromium ion Cr(Ⅵ),thereby providing access for biological imaging of Cr(Ⅵ)in unicellular algae.

关键词： heteroaromatic polymers multicomponent polymerization morphology photopatterns chromium sensor

Polarity-triggered anti-Kasha system for high-contrast cell imaging and classification

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Aggregate 2023年第2期4卷 216-226页

作者： Junyi Gong Peifa wei Junkai Liu yuncong Chen Zheng Zhao weijun Zhao Huilin Xie Chao Ma jacky w.y.lam Kam Sing wong ying Li Ben Zhong Tang Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhenChina Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionInstitute for Advanced StudyState Key Laboratory of Molecular NanoscienceDivision of Life Science and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and TechnologyClear Water BayKowloonChina Institutes of Physical Science and Information Technology Anhui UniversityHefeiChina Department of Physics HKUSTKowloonChina Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target and Clinical Pharmacology The NMPA and State Key Laboratory of Respiratory DiseaseInnovation Research Center for AIE Pharmaceutical BiologySchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina Center for AIE Research Shenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Material Science and EngineeringShenzhen UniversityShenzhenChina Center for Aggregation-Induced Emission SCUT-HKUST Joint Research InstituteState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhouChina AIE Institute Guangzhou Development DistrictHuangpuChina

Kasha’s rule,which states that all exciton emissions occur from the lowest excited state and are independent of excitation energy,makes high-energy excitons difficult to use and severely hinders the widespread applications of organic photoluminescent materials in the real *** decades,scientists have tried to break this rule to unleash the power of high-energy excitons,but only minimal progress has been achieved,with no rational guiding principles provided,and few applications *** far,breaking Kasha’s rule has remained a purely academic *** this paper,we introduce a design principle for a purely organic anti-Kasha system and synthesise a series of compounds based on the design *** predicted,these compounds all display evident S_(2) emissions in dilute *** addition,we introduce a highly accurate(over 90%)convolutional neural network as an assistant for the classification of cells using anti-Kasha luminogens,thereby providing a new application direction for anti-Kasha systems.

关键词： anti-Kasha cell classification excited-state dynamics fluorescence

A Simple Approach to Bioconjugation at Diverse Levels: Metal-Free Click Reactions of Activated Alkynes with Native Groups of Biotargets without Prefunctionalization

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Research 2018年第1期2018卷 172-183页

作者： Xianglong Hu Xueqian Zhao Benzhao He Zheng Zhao Zheng Zheng Pengfei Zhang Xiujuan Shi Ryan T.K.Kwok jacky w.y.lam Anjun Qin Ben Zhong Tang Department of Chemistry Hong Kong Branch of Chinese National EngineeringResearch Center for Tissue Restoration and ReconstructionInstitute of Advanced StudyState Key Laboratory of Molecular NanoscienceDivision of Life Science and Diversion of Biomedical EngineeringTe Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Ministry of Education Key Laboratory of Laser Life Science&Institute of Laser Life Science College of BiophotonicsSouth China Normal UniversityGuangzhou 510631China HKUST-Shenzhen Research Institute Shenzhen 518057China NSFC Center for Luminescence from Molecular Aggregates SCUT-HKUST Joint Research InstituteState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China

Te efcient bioconjugation of functional groups/molecules to targeted matrix and bio-related species drives the great development of material science and biomedicine,while the dilemma of metal catalysis,uneasy premodifcation,and limited reaction efciency in traditional bioconjugation has restricted the booming development to some ***,we provide a strategy for metal-free click bioconjugation at diverse levels based on activated *** a proof-of-concept,the abundant native groups including amine,thiol,and hydroxyl groups can directly react with activated alkynes without any modifcation in the absence of metal *** this strategy,high-efcient modifcation and potential functionalization can be achieved for natural polysaccharide,biocompatible polyethylene glycol(PEG),synthetic polymers,cell penetrating peptide,protein,fast whole-cell mapping,and even quick diferentiation and staining of Gram-positive bacteria,***,current metal-free click bioconjugation strategy based on activated alkynes is promising for the development of quick fuorescence labeling and functional modifcation of many targets and can be widely applied towards the fabrication of complex biomaterials and future in vivo labeling and detection.

关键词： proof catalysis biomaterials

ASBase:The universal database for aggregate science

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Aggregate 2023年第1期4卷 148-157页

作者： Junyi Gong wanjun Gong Bowu Haoran wang wei He Zhongyang Dai yangzhong Li yong Liu Zhiming wang Xiaojun Tuo jacky w.y.lam Zijie Qiu Zheng Zhao Ben Zhong Tang Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdongChina AIE-Institute State Key Laboratory of Luminescence Materials and DevicesCenter of Aggregation-induced EmissionKey Laboratory of Luminescence from Molecular Aggregates of Guangdong ProvinceSouth China University of Technology(SCUT)GuangzhouChina High Performance Computing Department National Supercomputing Center in ShenzhenShenzhenChina Department of Chemistry Hong Kong University of Science and TechnologyKowloonHong KongChina

This paper reports the first universal and versatile database on aggregate materials for the field of aggregate science *** the current stage,the database(http://119.***.135.188:8080/)contains over 1000 entries of organic aggregate material systems(mainly luminescent systems at the current stage)with a unique data structure which is designed particularly for aggregate materials and containing the photophysics and physicochemical properties of the compounds in different statuses of aggregation,including dilute solution form,pristine solid-state,stable crystalline,and nanoaggregates formed in *** web-based interface of the database provided functions to index,search,manipulate,fetch and deposit data *** addition,a background calculation service optimizes the chemical structure of new entries on different levels of *** database also provided background API for interactive developments of prediction or regression models based on machine-learning algorithms.

关键词： aggregate science aggregation-induced emission data-driven model database

Enhanced Emission of Molybdenum Disulfide by Organic−Inorganic Hybrid Heterojunctions

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Precision Chemistry 2023年第6期1卷 357-362页

作者： Si-wei Zhang Fulong Ma Jinhui Jiang Zaiyu wang Zijie Qiu jacky w.y.lam Guodan wei Zheng Zhao Ben Zhong Tang Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology999077 Hong KongChina School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhen(CUHK-Shenzhen)Guangdong 518172China Tsinghua-Berkeley Shenzhen Institute Institute of Materials ScienceTsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Tang−Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology999077 Hong KongChina Center for Aggregation-Induced Emission South China University of TechnologyGuangzhou 510640China

Due to their excellent stability and layer-dependent photoelectronic properties,transition metal dichalcogenides(TMDs)are one of the most extensively studied two-dimensional semiconductor materials in the postgraphene ***,its low luminescence quantum yield limits its application in displays,lighting,and ***,a 1,4,5,8,9,11-hexaazatriphenylenehexacarbonitrile(HATCN)layer was grown on the surface of chemical vapor deposition(CVD)-grown monolayer molybdenum disulfide(MoS_(2))by vacuum evaporation,which increased the photoluminescence intensity of MoS_(2)by 15 *** enhanced luminescence originates from the charge transfer from the conduction band of MoS_(2)to the lowest unoccupied molecular orbital(LUMO)of HATCN,which suppresses the emission of the negatively charged exciton(trion)while increasing the emission of the neutral ***-dependent fluorescence and Raman spectra demonstrate the feasibility of organic−inorganic hybrid heterojunctions for regulating *** facile and practical organic−inorganic hybrid heterojunction can elevate TMD applications,such as light-emitting diodes.

关键词： TMDs MoS_(2) CVD photoluminescence organic−inorganic hybrid heterojunction

Organic near-infrared photodetectors with photoconductivityenhanced performance

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Aggregate 2023年第5期4卷 120-127页

作者： Siwei Zhang Zhenlong Li Jingzhou Li Bingzhe wang Fang Chen Xubiao Li Shunjie Liu jacky w.y.lam Guichuan Xing Jiangyu Li Zheng Zhao Feiyu Kang Guodan wei Ben Zhong Tang Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Guangdong-Hong Kong-Macro Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsThe Hong Kong University of Science and TechnologyKowloonHong KongChina Tsinghua-Berkeley Shenzhen Institute Institute of Materials ScienceTsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhenChina Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhouChina Institute of Applied Physics and Materials Engineering University of MacaoAvenida da UniversidadeTaipaMacaoChina Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenChina Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchunChina School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhenChina Center for Aggregation-Induced Emission South China University of TechnologyGuangzhouChina

Organic near-infrared(NIR)photodetectors with essential applications in medical diagnostics,night vision,remote sensing,and optical communications have attracted intensive research *** with most conventional inorganic counterparts,organic semiconductors usually have higher absorption coefficients,and their thin active layer could be sufficient to absorb most incident light for effective ***,due to the relatively poor charge mobility of organic materials,it remains challenging to inhibit the photogenerated exciton recombination and effectively extract carriers to their respective ***,this challenge was addressed by increasing matrix conductivities of a ternary active layer(D–A–D structure NIR absorber[2TT-oC6B]:poly(N,N′-bis-4-butylphenyl-N,N′-bisphenyl)benzidin[PolyTPD]:[6,6]-phenyl-C61-butyric acid methyl ester[PCBM]=1:1:1)upon in situ incident light illumination,significantly accelerating charge transport through percolated interpenetrating *** greatly enhanced photoconductivity under illumination is intrinsically related to the unique donor–acceptor molecular structures of PolyTPD and 2TT-oC6B,whereas stable intermolecular interaction has been verified by systematic molecular dynamics *** addition,an ultrafast charge transfer time of 0.56 ps from the NIR aggregation-induced luminogens of 2TT-oC6B absorber to PolyTPD and PCBM measured by femtosecond transient absorption spectroscopy is beneficial for effective exciton *** solution-processed organic NIR photodetector exhibits a fast response time of 83μs and a linear dynamic range value of 111 dB under illumination of 830 ***,our work has opened up a pioneering window to enhance photoconductivity through in situ photoirradiation and benefit NIR photodetectors as well as other optoelectronic devices.

关键词： AIEgens organic NIR photodetectors photoconductivity

Revisiting an ancient inorganic aggregation-induced emission system:An enlightenment to clusteroluminescence

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Aggregate 2021年第2期2卷 127-135页

作者： Zheng Zhao Zaiyu wang Javad Tavakoli Guogang Shan Jianyu Zhang Chen Peng yu Xiong Xuepeng Zhang Tsz Shing Cheung youhong Tang Bolong Huang Zhaoxun yu jacky w.y.lam Ben Zhong Tang Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced StudyThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina School of Chemistry and Chemical Engineering Southeast UniversityNanjingChina Centre for Health Technologies School of Biomedical EngineeringUniversity of Technology SydneySydneyNew South WalesAustralia HKUST Shenzhen Research Institute ShenzhenGuangdongChina College of Science and Engineering Flinders UniversityAdelaideSouth AustraliaAustralia Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARChina Micro-X Ltd TonsleySouth AustraliaAustralia Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsGuangdong-Hong Kong-Macao China

Organic and inorganic clusteroluminescence have attracted great attention while the underlying mechanisms is still not well ***,we employed a series of ancient inorganic complexes platinocyanides with aggregation-induced emission property to elucidate the mechanism of clusteroluminescence including how does the chromophore form and how does the solid structures influence the luminescence *** results indicate that the isolated platinocyanide cannot work as a chromophore to emit visible light,while their clusterization at aggregate state can trigger the d-orbitals coupling of the platinum atoms to facilitate the electron exchange and delocalization to form a new chromophore to emit visible ***,the counter ions and H2O ligands help to rigidify the three-dimensional network structure of the platinocyanides to suppress the excited state nonradiative decay,resulting in the high quantum yield of up to 96%.This work fundamentally helps understanding both the organic and inorganic clusteroluminescence phenomenon.

关键词： aggregation-induced emission clusteroluminescence radioluminescence

An ultra thin,bright,and sensitive interactive tactile display based on organic mechanoluminescence for dual-mode handwriting identification

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InfoMat 2024年第6期6卷 76-87页

作者： Tingting Hou wenlang Li Haoyu wang yuantian Zheng Chaojie Chen Haoran Zhang Kai Chen Huilin Xie Xin Li Shaoshuai He Siwei Zhang Dengfeng Peng Cheng yang jacky w.y.lam Ben Zhong Tang yunlong Zi Department of Mechanical and Automation Engineering The Chinese University of Hong KongHong Kongthe People's Republic of China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced StudyThe Hong Kong University of Science and TechnologyHong Kongthe People's Republic of China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhenthe People's Republic of China Thrust of Sustainable Energy and Environment The Hong Kong University of Science and Technology(Guangzhou)Guangzhouthe People's Republic of China The Hong Kong University of Science and Technology Interdisciplinary Program Office Hong Kong SARthe People's Republic of China Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhenthe People's Republic of China School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhenthe People's Republic of China HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute Shenzhenthe People's Republic of China Guangzhou HKUST Fok ying Tung Research Institute Guangzhouthe People's Republic of China

Visible light-based human–machine interactive media is capable of transmitting electrical readouts to machines and providing intuitive feedback to users ***,many inorganic mechanoluminescent(ML)materials-based interactive media,typically ZnS-loaded phosphors(ZLPs),have been successfully ***,organic ML materials-based solutions were rarely exploited despite their huge merits of strong structural modification,abundant luminescence property,low cost,easy preparation,and so ***,we propose a novel interactive tactile display(ITD)based on organic ML materials(Cz-A6-dye)and triboelectric nanogenerator,with ultra-brightness(130%enhancement)and ultra-low threshold pressure(57%reduction)as compared to *** proposed ITD achieves the conversion of weak mechanical stimuli into visible light and electrical signals simultaneously,without extra power ***,the relationship between the luminous performance of organic ML materials and mechanical force is quantified,benefiting from the uniform ML layer *** by convolutional neural networks,the high-accuracy recognition(97.1%)for handwriting and identity of users is realized at the same ***,the ITD has great potential for intelligent wearable electronics and classified military applications.

关键词： interactive media organic mechanoluminescence triboelectric nanogenerators

A facile design for multifunctional AIEgen based on tetraaniline derivatives

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Science China Chemistry 2019年第6期62卷 732-738页

作者： Beibei Liu wei He Hao Lu Kun wang Mingming Huang Ryan Tsz Kin Kwok jacky wing yip lam Longcheng Gao Jiping yang Benzhong Tang Key laboratory of Aerospace Advanced Materials and Performance Ministry of Education School of Materials Science and EngineeringBeihang University Department of Chemistry HKUST Jockey Club Institute for Advanced Study Institute of Molecular Functional Materials Division of Biomedical Engineering State Key Laboratory of Molecular Neuroscience Division of Life Science The Hong Kong University of Science and Technology Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education Key Laboratory of Beijing Energy School of Chemistry and Environment Beihang University

Aniline oligomers have been widely used in many fields due to their excellent physicochemical properties. Owing to strong intermolecular interactions, their emission is always weakened or quenched when they are in high concentration or aggregated state, which greatly limits their fluorescent applications. Inspired by the concept of aggregation-induced emission(AIE), herein we introduced large steric groups onto the aniline oligomer to prevent the formation of packing structure. In particular, diphenyl vinyl group was bonded with oligomeric tetraaniline by a facile synthetic procedure with high yield. The obtained aniline oligomer derivative exhibited typical AIE features, which was also confirmed by density functional theoretical calculation. More importantly, this AIE oligomer was able to detect Fe^(3+) ions selectively and quantitatively. The fluorescence intensity decreased linearly along with the increment of Fe^(3+) concentration. Moreover, we demonstrated that this AIE oligomer could stain live bacteria, such as E. coli and S. aureus efficiently. All these results suggest that such a readily accessible and multifunctional tetraaniline derivative provides a new platform for the construction of fluorescent materials.

关键词： tetraaniline aggregation-induced emission Fe3+ ion detection bacteria imaging